Nike Free Run Flyknit 4.0: Flexible and breathable for everyday use

90 / 100 by Kyle Jang • Level 3 expert

The Nike Free Flyknit 4.0 is a great looking shoe. It combines a seamless upper with multiple colors with a sleek, low profile. I would consider the 4.0 a pseudo lifestyle shoe because of all the people I see wearing it while I'm out and about.

The knit pattern really stands out, and looks great while going for a run, or grabbing a bite to eat. It's no surprise that Nike has continued to make shoes that look very much like it.




Because of the Flyknit material, this shoe can be bought a tad bit small but will still fit fine. The Flyknit really stretches to fit your foot and is extremely comfortable once it breaks in a little bit. When I went shopping for a pair of these, they only had a half size smaller than my usual size in the color I wanted.

I decided to try them on, and although they fit a little snug, I decided to keep them. A week or so later, the Flyknit had stretched out to accommodate my foot and I had that sock-like fit that I wanted for this shoe.



Also, the back of the shoe really locks your foot in and doesn't allow for any heel slippage. The Flyknit 4.0 is a snug fitting shoe that has a great fit due to the Flyknit upper.



Anything that Nike makes with Flyknit usually has a higher price point. The Flyknit 4.0 has a retail price of $165 CAD, and while that is a bit high, I believe that it's worth it for the shoe that you get.

It is a very versatile shoe and the Flyknit upper is a great addition. If not for the Flyknit upper, then the most I would pay for this shoe would be $120 CAD. The free midsole is lacking in cushioning compared to Zoom and Air.



Like any Nike model with a Free midsole, the Nike Free Flyknit 4.0 is an extremely flexible shoe. It's flexibility makes it feel as though you are running with barely anything on your foot.

Combined with the sock-like fit and feather like lightness, this shoe truly exemplifies barefoot running. Don't be fooled by the "barefoot running" advertising however.



This shoe has enough cushioning to get through those daily runs, unlike some other barefoot running shoes. The Flyknit 4.0 is also a fairly comfortable shoe. While not as cushiony as the Zoom or Air midsoles, the Free midsole provides adequate cushioning that should last quite a while.



However, I personally found that this shoe isn't super responsive while I was doing some speed work with it. Nevertheless, the Free Flyknit 4.0 is a well performing shoe for various purposes.



The Nike Free Run Flyknit 4.0 is a sharp looking shoe that combines fashion with functionality. It is very lightweight and has a flexible midsole that makes it ideal for many different kinds of athletes.

The Flyknit upper is amazing and stretches to fit your foot like a sock.

Kyle Jang

Kyle Jang • Level 3 expert

Hi, I'm Kyle! I have been involved in Track and Field for 3 years as a sprinter and long jumper, and as a result I have gone through many pairs of shoes. I also collect shoes and have great knowledge on the fit and technology of many shoes, particularly New Balance.

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